package com.zgx.plus.common.config;

import cn.hutool.core.thread.NamedThreadFactory;
import cn.hutool.json.JSONUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * 线程池配置
 **/
@Configuration
public class ThreadPoolConfig {
    private static final Logger log = LoggerFactory.getLogger(ThreadPoolConfig.class);

    private final int corePoolSize = 50;        // 核心线程池大小
    private final int maxPoolSize = 200;        // 最大可创建的线程数
    private final int queueCapacity = 1000;     // 队列最大长度
    private final int keepAliveSeconds = 300;   // 线程池维护线程所允许的空闲时间

    @Bean(name = "threadPoolTaskExecutor")
    public ThreadPoolTaskExecutor threadPoolTaskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setMaxPoolSize(maxPoolSize);
        executor.setCorePoolSize(corePoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setKeepAliveSeconds(keepAliveSeconds);
        // 线程池对拒绝任务(无线程可用)的处理策略
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        return executor;
    }

    /**
     * 执行周期性或定时任务
     */
    @Bean(name = "scheduledExecutorService")
    protected ScheduledExecutorService scheduledExecutorService() {
        return new ScheduledThreadPoolExecutor(corePoolSize,
                new NamedThreadFactory("schedule-pool", true),
                new ThreadPoolExecutor.CallerRunsPolicy()) {
            @Override
            protected void afterExecute(Runnable r, Throwable t) {
                super.afterExecute(r, t);
                log.error("=ScheduledExecutorService=>{}", JSONUtil.toJsonStr(t));
            }
        };
    }
}
